"Our anti-doping policy follows that of the European Tour," said R&A chief executive Martin Slumbers.

He added that talks about improving doping policies were "not a matter for public discussion".

Slumbers said: "For those players that are in the registered testing pool for the Olympics there is the IGF (International Golf Federation) additional testing that is being carried out during this week.

"Our belief is that we should be as a sport right at the highest level of standards around anti-doping and that's something that the tours and ourselves are privately talking about behind closed doors."